Process for making surgical bandages.



J. A. CAMERON & G. B. BIRCH.

PROCESS FOR MAKING SURGICAL BANDAGES.

APPLICATION FILED MAR.3,1916- Patented Feb. 19, 1918..

3 SHEETSSHEET l- J. A. CAMERON 6. G. B. BIRCH.

PROCESS FOR MAKING SURGICAL BANDAGES.

APPLICATION FILED MAR. 3. 1916.

FE o 4 E s 5 3 a w m m m m J J. A. CAMERON & G. B. BIRCH. PROCESS FORMAKING SURGICAL BANDAGES.

APPLICATION FILED MAR. 3, I916.

Patented Feb. 19, 1918.

3 SHEETS-SHEET 3.

TTNTTED PATENT FFT@E.

JAMES A. CAMERON AND GUSTAF BIRGER BIRCH, F BROOKLYN, NEW YORK,ASSIGNORS TO'CAMERON MACHINE COMPANY, OF BROOKLYN, NEW YORK, ACORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Feb. 119, 1918..

Original application filed October 10, 1914, Serial No. 866,012. Dividedand this application filed March 3,

1916. Serial No. 81,809.

To all whom it may concern:

Be it known that we, JAMns A. CAMERON and GUSTAF B. BIRCH, both citizensof the United States, and residents of the borough of Brooklyn, in thecounty of Kings, city and State of New York, have invented certain newand useful Improvements in Processes for Making Surgical Bandages, of

. which the following is a specification.

This invention relates to the art of making surgical bandages.

The main object of this invention is to reduce the number of operationsnecessary to produce bandages and to obtain as wide a bandage aspossible from a given width of web.

In carrying out this invention we employ a process which consists inslitting a web of material lengthwise by severing it with an undulatingcut so as to simultaneously destroy the continuity of the warp threadsadjacent to the cut and so as to leave a scalloped edge formed by weftthreads of unequal length after which the material is rewound into coilsor rolls, preferably on a single shaft which when removed enables theoperator to separate the rolls and thereby produce a pluralitv offinished bandages. The product thus formed is produced by a much smallernumber of operations and is of such a character that the edges thereofwill not unravel since the outermost threads as described before aredestroyed in the process of slitting the fabric and the remaining warpthreads are held in place by the scalloped edge formed by the weftthreads of unequal length.

Preferably the severed warp threads may be removed from the bandagebefore it' is rewound, by any suitable means, such as means for causinga blast of air to impinge upon the undulating edges.

In carrying out this process a machine is utilized which is providedwith a slitting means located in the path of the moving web for slittingthe web lengthwise before winding on undulating lines of severance,thereby acting on the warp and weft threads in the manner described. Theslitting means preferably embrace a backing member of suitable characterand a rotary cutting member having a tortuous cutting edge.

The machine here disclosed is claimed in the pending application of theapplicants herein filed August 3, 1915, Ser. No. 43,370.

In the accompanying drawings the invention is disclosed in a concreteand preferred form from which, however, departure may be made withoutdeparting from the scope of the invention as expressed in the appendedclaims.

In the said drawings Figure l is a vertical sectional view through a.machine which may be utilized in carrying out the process.

Fig. 2 is a general plan view of the device on the line 2-2 of Fig. 1partly in section and partly broken away for clearness of illustration.

Fig. 3 is an edge view of a portion of the tortuous rotary cutter.

Fig. 4 is a view of a portion of the web showing the undulating line ofseverance with respect to the warp and weft threads.

Fig. 5 is a figure showing the effect of the undulating cut with thesevered warp threads remaining in place and with the scalloped edgeformed by the weft threads of unequal length.

Fig. 6 is a view similar to Fig. 5 with the severed warp threadsremoved.

Similar characters of reference designate corresponding parts in thedifierent views.

In the drawings 1 indicates a roll of material from which the bandagesare to be made suitably supported on a core in the machine, and 2 is theweb member which is led therefrom over suitable guide rollers 3, 4: and5.

At 6 is shown the rewinding mechanism of a well-known form whichconsists in this instance of two surface rewinding rolls 7 and 8rotating in the same direction, and a pressure roll 9 mounted to rise asthe diameter of the rewound roll increases. At 11 is shown the rewindingshaft which is placed between the rollers 7, 8 and 9 and on which thefinished sections are rewound. The cutting device here consists of therotary cutvided with an inner core 19 and a plurality ting member 12which is provided with a tortuous cutting edge, as is best shown in Fig.3. There may be .a number of these rotary cutting members and they arepreferably mounted in brackets 13 hung on the rails 14 in a well-knownmanner, which rails are adapted to be raised or lowered so as to bringthe cutting member 12 into engagement with the roll 8 by means of thecam 15 in a manner well-understood inthe art. The cam 15 also actuatesthe lever 16 pivoted at 17 and provided with a tension roll 18 whichserves to bring the web of material into engagement with the rolls 7 or8, or both.

In the present embodiment of the invention one of the rewinding rolls 8constitutes the backing member for the cutting member 12. This backingmember is preferably proof outer shells 20 of a material harder than thematerial of which the rotary cutting member 12 1s made, so that thecutting memher will not cause indentations in the backing roll. Thetortuous cutting edge of the rotary cutting member 12 is preferablyblunt, that is to say, it is not a sharp cutting edge since, if it were,it would be destroyed by coming in contact with the hard outer shells 20of the backing member. The web of material is led over the guide rolls3, 4 and 5 and over the tension roll 18 and in between the backing roll8, and the rotary cutting member 12, which by its action, slits the weblongitudinally on undulating lines, as is indicated at 27 in Fig. 4. Itwill be noted that this undulating cut will sever a number of the warpthreads 28 within the confines of the lateral limits of the undulatingcut, the effect of which may be clearly seen in Fig. 5. At the same timethe undulating cut will sever the weft threads 29 in such a manner as toleave a scalloped edge formed by weft threads of unequal lengthrecurring at like. intervals, as is shown in Figs. 5 and 6. After havingbeen acted upon by the cutting member the material passes around theroller 8 and thence to the rewinding shaft 11 which rewinds the slittedand fimshed sections side by side into a plurality of coils or rolls.

material. When a suflicient diameter of material has been rewound theshaft 11 is removed from the machine and the rolls of finished bandageare removed therefrom.

If desired, the web may be led over a hollow guide roller 21, which isinterposed The scalloped edges of the finished bandage rolls, into whichthe matein the line of travel between the slitting means and therewinding means and which is open to the atmosphere, as shown at 22.From thence the web may pass back to the upper portion of the roller 8and then to the rewinding shaft 11. The hollow guide roller 21 is inconnection, by means of suitable piping at 23, with the containers ortanks 24, and an air nozzle 25 of suitable construction is arrangedadjacent the slot 22 of the hollow guide roller 21 so that as the webtravels over the said guide roHer 21 air blown through the nozzle willcarry the severed Warp threads into the tanks 24. These tanks may beprovided with suitable screening means for retaining the particles ofthe warp threads and for permitting the escape of the air in awell-known manner.

The rewinding shaft 11 is adapted to slidabl engage the guiding members10 so as to e free to rise as the diameter of the rewound materialincreases.

A bracket shown at 26 is adapted to sup-- port a rewinding shaft 11while an exchange of shafts is being made due to the filling of one ofthe shafts.

What is claimed is:

1. The process of making surgeons bandages which consists in slitting amoving web of material lengthwise by severing it with an. undulating cutso as to simultaneously destroy the continuity of warp threads adjacentto the cut and so as to leave a scalloped edge formed by weft threads ofunequal length, and then removing the severed warp threads from themoving web.

2. The process of making surgeons bandages which consists in feeding aweb of material, slitting the web lengthwise Dy severing it with anundulating out while feeding the same so as to simultaneously destroythecontinuity of warp threads adjacent to the cut and so as to leave ascalloped edge formed by weft threads of unequal length, then removingthe severed warp threads, and then rewinding the slitted sections.

3. The process of making surgeons bandages which consists in feeding aweb of material, slitting the web lengthwise with an undulating cut soas to form sections with contiguous scalloped edges, then removing thesevered warp threads, and finally rewinding the sections with thecontiguous scalloped edges in interlocked but not in overlappedrelation.

4. The process of slitting and rewinding sheet material which consistsin first slitting a web of material with an undulating cut so as to formsections with contiguous scalloped edges, and then rewinding thesections with the contiguous scalloped edges in interlocked but not inoverlapped relation.

5. The process of slitting and rewinding sheet material which consistsin first slitting a web of material with an undulating cut so as to formsections with contiguous scalloped edges, and then rewinding thesections on the same shaft without overlapping the scalloped edges.

Signed at New York city, in the county of Kings and State of New York,this 1st day of March, A. D. 1916.

' JAMES A. CAMERON.

GUSTAF BIRGER BIRCH. Witnesses:

F. W. Scorr, C. M. ESHELMAN.

